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(fix): improve error message on missing executable (#579)

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Leo Vivier 2020-05-07 19:44:28 +02:00 committed by GitHub
parent 1912beebc3
commit 9bc80ff9f7
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1 changed files with 19 additions and 15 deletions
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20
org-roam-graph.el
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@ -53,8 +53,8 @@ It may be one of the following:
(const :tag "view-file"))
:group 'org-roam)
(defcustom org-roam-graph-executable (executable-find "dot")
"Path to graphing executable."
(defcustom org-roam-graph-executable "dot"
"Path to graphing executable, or its name."
:type 'string
:group 'org-roam)
@ -219,9 +219,14 @@ into a digraph."
(defun org-roam-graph--build (&optional node-query)
"Generate a graph showing the relations between nodes in NODE-QUERY."
(unless org-roam-graph-executable
(user-error "Can't find %s executable. Please check if it is in your path"
org-roam-graph-executable))
(let* ((name org-roam-graph-executable)
(exec (ignore-errors (executable-find name))))
(unless exec
(user-error (concat "Cannot find executable "
(when name
(format "\"%s\" " name))
"to generate the graph. "
"Please adjust `org-roam-graph-executable'")))
(let* ((node-query (or node-query
`[:select [file titles]
:from titles
@ -229,9 +234,8 @@ into a digraph."
(graph (org-roam-graph--dot node-query))
(temp-dot (make-temp-file "graph." nil ".dot" graph))
(temp-graph (make-temp-file "graph." nil ".svg")))
(call-process org-roam-graph-executable nil 0 nil
temp-dot "-Tsvg" "-o" temp-graph)
temp-graph))
(call-process exec nil 0 nil temp-dot "-Tsvg" "-o" temp-graph)
temp-graph)))
(defun org-roam-graph--open (file)
"Open FILE using `org-roam-graph-viewer' with `view-file' as a fallback."